Cyclosporine A no Benefit in Reperfused MI

HealthDay News — A single intravenous cyclosporine A (CsA) bolus just before primary percutaneous coronary intervention has no beneficial effects on ST-segment resolution in reperfused myocardial infarction (MI), according to a study published in the February 2 issue of the Journal of the American College of Cardiology.

The researcher found that 52.0 percent of CsA patients and 49.0% of controls had ST-segment resolution ≥70 percent (P = 0.55). On day four, the median high-sensitivity cardiac troponin T (hs-cTnT) was 2160 and 2063 ng/L in the CsA and control group, respectively (P = 0.85). There was no between-group difference in left ventricular (LV) ejection fraction on day four and at six months. The site of infarct did not affect CsA efficacy. No acute allergic reactions were seen, or nonsignificant excesses of six-month mortality (5.7 versus 3.2%; P = 0.17) or cardiogenic shock (2.4 versus 1.5%; P = 0.33).

"In the CYCLE (CYCLosporinE A in Reperfused Acute Myocardial Infarction) trial, a single intravenous CsA bolus just before primary percutaneous coronary intervention had no effect on ST-segment resolution or hs-cTnT, and did not improve clinical outcomes or LV remodeling up to six months," the authors write.

One author disclosed financial ties to the pharmaceutical and medical device industries. The CYCLE trial was partially funded by Novartis Italy. Reagents for measuring hs-cTnT were provided by Roche Diagnostics.